body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

.map-container {
  width: 100%;
  height: 100vh;
  position: relative; /* create stacking context so absolute UI doesn't collapse it */
  z-index: 0;
}

.header-title {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1100;
  display: flex;
  align-items: center;
  gap: 6px;
  color: #011F82;
  font-size: 45px;
  font-weight: bold;
  pointer-events: none;
}

.header-title .header-icon {
  margin-top: 1.5%;
  width: 55px;
  height: 55px;
}

/* Bộ lọc */
.device-control {
  margin-top: 50px;
  font-size: 14px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  border-radius: 8px;
  background: #fff;
  padding: 16px;
  max-width: 220px;
  overflow-y: auto;
  position: absolute;
  top: 60px;
  left: 10px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.device-control h4 {
  margin: 0;
  font-size: 16px;
  color: #011F82;
  border-bottom: 1px solid #B9D6F3;
  padding-bottom: 4px;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.device-control label {
  color: #6D92D0;
  font-weight: 500;
  font-size: 14px;
}

.device-control input[type="date"],
.device-control select,
.device-control button {
  height: 36px;
  padding: 0 8px;
  border-radius: 6px;
  border: 1px solid #B9D6F3;
  font-size: 14px;
  outline: none;
  box-sizing: border-box;
  margin-top: 15px;
  width: 100%;
}

.device-control input[type="date"]:focus,
.device-control select:focus {
  border-color: #011F82;
  box-shadow: 0 0 5px rgba(1,31,130,0.5);
}

.device-control button {
  border: none;
  background-color: #011F82;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.2s;
  align-items: center;
}

.device-control button:hover {
  background-color: #0055cc;
}

/* Sidebar danh sách thiết bị */
.device-list-container {
  position: absolute;
  top: 150px;
  right: 10px;
  background: white;
  padding: 10px;
  border: 1px solid #ccc;
  max-height: 300px;
  overflow-y: auto;
  z-index: 1000;
}

.device-list-container h4 {
  margin: 0 0 6px 0;
  font-size: 16px;
  color: #011F82;
  border-bottom: 1px solid #B9D6F3;
  padding-bottom: 4px;
}

/* Tabs */
.tabs {
  position: absolute;
  top: 80px;
  right: 10px;
  z-index: 1100;
  display: flex;
  gap: 5px;
}

.tabs button {
  padding: 8px 16px;
  border: none;
  background: #fff;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.tabs button:hover {
  background: #f0f0f0;
}

.tabs button.active {
  background: #011F82;
  color: white;
}

.guide-btn {
  background: #28a745 !important;
  color: white !important;
  border-radius: 50% !important;
  width: 35px !important;
  height: 35px !important;
  font-size: 18px !important;
  font-weight: bold !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin-left: 10px !important;
}

.guide-btn:hover {
  background: #218838 !important;
}

/* Dialog hướng dẫn */
.guide-dialog {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.guide-content {
  background: white;
  border-radius: 12px;
  padding: 0;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  animation: fadeInScale 0.3s ease-out;
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.guide-header {
  background: #011F82;
  color: white;
  padding: 20px;
  border-radius: 12px 12px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.guide-header h3 {
  margin: 0;
  font-size: 20px;
}

.close-btn {
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background 0.2s;
}

.close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.guide-body {
  padding: 20px;
}

.guide-section {
  margin-bottom: 25px;
}

.guide-section h4 {
  color: #011F82;
  margin: 0 0 15px 0;
  font-size: 16px;
  border-bottom: 2px solid #B9D6F3;
  padding-bottom: 5px;
}

.icon-guide {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.icon-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 10px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  background: #f9f9f9;
}

.guide-icon {
  width: 35px;
  height: 35px;
  flex-shrink: 0;
}

.icon-description {
  flex: 1;
}

.icon-description strong {
  color: #011F82;
  font-size: 14px;
}

.guide-list {
  margin: 0;
  padding-left: 20px;
}

.guide-list li {
  margin-bottom: 8px;
  line-height: 1.4;
}

.guide-list strong {
  color: #011F82;
}

/* Mobile responsive cho dialog */
@media (max-width: 768px) {
  .guide-content {
    max-width: 95%;
    margin: 10px;
  }
  
  .icon-item {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }
  
  .guide-icon {
    align-self: center;
  }
}

/* Summary message styles */
.summary-message {
  margin: 10px 0;
  padding: 12px;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.4;
  border-left: 4px solid;
  background: #f8f9fa;
  display: none;
}

.summary-message.info {
  border-left-color: #17a2b8;
  background: #d1ecf1;
  color: #0c5460;
}

.summary-message.success {
  border-left-color: #28a745;
  background: #d4edda;
  color: #155724;
}

.summary-message.error {
  border-left-color: #dc3545;
  background: #f8d7da;
  color: #721c24;
}

.summary-message.warning {
  border-left-color: #ffc107;
  background: #fff3cd;
  color: #856404;
}

/* Spinner inside summary message */
.summary-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(0,0,0,0.1);
  border-top-color: rgba(0,0,0,0.6);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Tooltip label for devices (permanent) */
.device-label {
  background: rgba(255,255,255,0.95) !important;
  color: #011F82 !important;
  padding: 2px 8px !important;
  border-radius: 6px !important;
  font-size: 12px !important;
  font-weight: 600 !important;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15) !important;
  border: 1px solid rgba(1,31,130,0.08) !important;
  pointer-events: none !important; /* allow clicks through to marker */
}